Centralizer



FIG. 1 is a side view of a centralizer, according to a first embodiment.The centralizer is positioned on a tubular and stop collars are disposedon the tubular on either axial end of the centralizer.

FIG. 2 is an end view of the centralizer, according to the firstembodiment, positioned on the tubular.

FIG. 3 is a side view of a centralizer, according to a secondembodiment. The centralizer is positioned on a tubular and stop collarsare disposed on the tubular on either axial end of the centralizer.

FIG. 4 is an end view of the centralizer, according to the secondembodiment, positioned on the tubular.

FIG. 5 is a side view of a centralizer, according to a third embodiment.The centralizer is positioned on a tubular and stop collars are disposedon the tubular in windows through either end collar of the centralizer.

FIG. 6 is an end view of the centralizer, according to the thirdembodiment, positioned on the tubular.

FIG. 7 is a side view of a centralizer, according to a fourthembodiment. The centralizer is positioned on a tubular and stop collarsare disposed on the tubular in windows through either end collar of thecentralizer; and,

FIG. 8 is an end view of the centralizer, according to the fourthembodiment, positioned on the tubular.

The broken lines in the drawings depict unclaimed portion of thecentralizer only and form no part of the claimed design.

CLAIM The ornamental design for a centralizer, as shown and described.